Null check view during paint invalidation

third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/ObjectPaintInvalidator.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutPartItem.h"
@@ skipping 364 matching lines @@
       JsonObjectForPaintInvalidationInfo(
           dirty_rect, PaintInvalidationReasonToString(invalidation_reason)));
 
   // This conditional handles situations where non-rooted (and hence
   // non-composited) frames are painted, such as SVG images.
   if (!paint_invalidation_container.IsPaintInvalidationContainer()) {
     InvalidatePaintRectangleOnWindow(paint_invalidation_container,
                                      EnclosingIntRect(dirty_rect));
   }
 
-  if (paint_invalidation_container.View()->UsesCompositing() &&
-      paint_invalidation_container.IsPaintInvalidationContainer()) {
-    SetBackingNeedsPaintInvalidationInRect(paint_invalidation_container,
-                                           dirty_rect, invalidation_reason);
+  auto* view = paint_invalidation_container.View();
+  if (view && view->UsesCompositing()) {
+    if (paint_invalidation_container.IsPaintInvalidationContainer()) {
+      SetBackingNeedsPaintInvalidationInRect(paint_invalidation_container,
+                                             dirty_rect, invalidation_reason);
+    }
   }
 }
 
 LayoutRect ObjectPaintInvalidator::InvalidatePaintRectangle(
     const LayoutRect& dirty_rect,
     DisplayItemClient* display_item_client) {
   CHECK(object_.IsRooted());
 
   if (dirty_rect.IsEmpty())
     return LayoutRect();
@@ skipping 265 matching lines @@
 
   context_.painting_layer->SetNeedsRepaint();
   object_.InvalidateDisplayItemClients(reason);
   return reason;
 }
 
 DisablePaintInvalidationStateAsserts::DisablePaintInvalidationStateAsserts()
     : disabler_(&g_disable_paint_invalidation_state_asserts, true) {}
 
 }  // namespace blink